A compression base layer top is a type of clothing designed to be worn next to the skin. It is typically made of a stretchy, moisture-wicking fabric and is designed to fit snugly against the body. The main purpose of a compression base layer top is to provide support and stability to the muscles, which can help to improve performance and reduce the risk of injury during physical activity. Compression base layer tops are often worn by athletes, but they are also popular among people who engage in a wide range of activities, including running, cycling, and weightlifting. Some people also wear compression base layer tops as a form of medical therapy to help manage conditions such as lymphedema and venous insufficiency.